There are a few key differences between conferences and meetings.
Conferences are typically much larger in scale than meetings. A conference may have hundreds or even thousands of attendees, while a meeting is usually smaller, with just a handful of participants.
Conferences tend to be more formal than meetings. They often have scheduled events and speakers, and the overall atmosphere is usually more professional. And, conferences are usually held at special venues, such as hotels or convention centers, while meetings can be held anywhere that is convenient for the participants.
Read: What is the difference between conference seminar and workshop?